Intel DX48BT2 Product Guide - Page 15

Desktop Board Features Intel® X48 Express Chipset The Intel X48 Express Chipset consists of the following devices: • Intel X48 Express Chipset Memory Controller Hub (MCH) with Direct Media Interface (DMI) interconnect • Intel 82801IR I/O Controller Hub (ICH9R) with DMI interconnect The MCH provides interfaces to the processor, memory, PCI Express bus, and the DMI interconnect. ICH9R is a centralized controller for the board's I/O paths. Related Links: Go to the following link for more information about the Intel X48 Express Chipset: http://developer.intel.com/products/chipsets/index.htm Audio Subsystem The onboard audio subsystem consists of the following components: • Intel® ICH9R I/O controller hub • IDT STAC9274D audio codec The subsystem has the following headers and connectors: • Back panel audio connectors, including an S/PDIF optical port • High Definition (HD) Audio front panel header that provides mic in and line out signals for front panel audio connectors • HD Audio Link header used for HDMI video cards • S/PDIF connector that can be used for HDMI video cards that do not work with the HD Audio Link header The audio subsystem supports the following features: • Dolby* Home Theater • A signal-to-noise (S/N) ratio of 95 dB • Independent multi-streaming 8-channel (7.1) audio (using the back panel audio connectors) and 2-channel audio (using the Intel High Definition Audio front panel header) • ADAT optical interface support via the back panel S/PDIF optical port Related Links: Go to the following link or pages for more information about: • Audio drivers and utilities http://support.intel.com/support/motherboards/desktop/ • The location of the onboard audio headers, Figure 27 on page 48 • The signal names for the Intel High Definition Audio front panel header and the HD Audio Link header, page 49 • The back panel audio connectors, Figure 28 on page 53 15